Chicago to Rock Springs time converter

Rock Springs is 1 hour behind Chicago. When it is 9:00 AM in Chicago, it is 8:00 AM in Rock Springs.

Chicago CDT

Tuesday, October 20, 2026

Rock Springs MDT

Tuesday, October 20, 2026

Chicago
Illinois, United States
Tue, Oct 20
CDTUTC-5
Rock Springs
Wyoming, United States
Tue, Oct 20
MDTUTC-6-1h
Finding your time zone…
Shared working hours (9:00–18:00)

Chicago to Rock Springs conversion table

Every hour of today in Chicago and the matching time in Rock Springs. Light rows are typical working hours (9:00–18:00).

ChicagoRock Springs
12:00 AM11:00 PM−1 day
1:00 AM12:00 AM
2:00 AM1:00 AM
3:00 AM2:00 AM
4:00 AM3:00 AM
5:00 AM4:00 AM
6:00 AM5:00 AM
7:00 AM6:00 AM
8:00 AM7:00 AM
9:00 AM8:00 AM
10:00 AM9:00 AM
11:00 AM10:00 AM
12:00 PM11:00 AM
1:00 PM12:00 PM
2:00 PM1:00 PM
3:00 PM2:00 PM
4:00 PM3:00 PM
5:00 PM4:00 PM
6:00 PM5:00 PM
7:00 PM6:00 PM
8:00 PM7:00 PM
9:00 PM8:00 PM
10:00 PM9:00 PM
11:00 PM10:00 PM

Best time to call or meet

Both sides are at work from 10:00 AM – 6:00 PM in Chicago (9:00 AM – 5:00 PM in Rock Springs).

Daylight saving time and the difference

The difference changes during the year because Chicago and Rock Springs switch clocks on different dates:

  • Oct 20, 2026 – Nov 1, 2026: -1h
  • Nov 1, 2026 – Nov 1, 2026: ±0
  • Nov 1, 2026 – Mar 14, 2027: -1h
  • Mar 14, 2027 – Mar 14, 2027: -2h
  • Mar 14, 2027 – Oct 20, 2027: -1h

Distance

Chicago and Rock Springs are 1,784 km (1,109 miles) apart in a straight line.

More conversions

Rock Springs to ChicagoChicago to New YorkChicago to LondonChicago to Los AngelesChicago to TorontoChicago to São PauloChicago to ParisChicago to BerlinChicago to MoscowChicago to DubaiChicago to New DelhiChicago to BangkokChicago to Singapore
New York to Rock SpringsLondon to Rock SpringsLos Angeles to Rock SpringsToronto to Rock SpringsSão Paulo to Rock SpringsParis to Rock SpringsBerlin to Rock SpringsMoscow to Rock SpringsDubai to Rock SpringsNew Delhi to Rock SpringsBangkok to Rock SpringsSingapore to Rock Springs

Questions and answers

What is the time difference between Chicago and Rock Springs?

Rock Springs is 1 hour behind Chicago.

What time is it in Rock Springs when it is 9 AM in Chicago?

When it is 9:00 AM in Chicago, it is 8:00 AM in Rock Springs.

When is the best time to call Rock Springs from Chicago?

Both sides are at work from 10:00 AM – 6:00 PM in Chicago (9:00 AM – 5:00 PM in Rock Springs).

Does the time difference between Chicago and Rock Springs change?

Yes, for part of the year, because daylight saving time starts and ends on different dates or applies on one side only.